Home / 287,849.94-431,561.66-137,947.49

Finding the Fourth Proportional to 287,849.94, 431,561.66 and 137,947.49

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Solution

The fourth proportional to 287,849.94, 431,561.66 and 137,947.49 is: 206,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,849.94 : 431,561.66 = 137,947.49 : x
  2. Step 2: Convert to fraction form
    287,849.94/431,561.66 = 137,947.49/x
  3. Step 3: Cross multiply
    287,849.94x = 431,561.66 × 137,947.49
  4. Step 4: Simplify right side
    287,849.94x = 59,532,846,548.04
  5. Step 5: Solve for x
    x = 59,532,846,548.04/287,849.94
  6. Step 6: Final answer
    x = 206,819.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.